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Editorial Team
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Asked: 2026-05-27T11:25:48+00:00

While trying to do an assets:precompile for a production website I’ve encountered this error

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While trying to do an assets:precompile for a production website I’ve encountered this error for the first time. 

 rake assets:precompile undefined method directory? for nil:NilClass

I have successfully updated the website and done a assets:precompile many times before.

The full example:

# RAILS_ENV=production rake assets:precompile --trace                        
/usr/local/rvm/gems/ruby-1.9.2-p290@pm/gems/rack-1.3.4/lib/rack/backports/uri/common_192.rb:53: warning: already initialized constant WFKV_
** Invoke assets:precompile (first_time)
** Execute assets:precompile
/usr/local/rvm/gems/ruby-1.9.2-p290@pm/gems/rack-1.3.4/lib/rack/backports/uri/common_192.rb:53: warning: already initialized constant WFKV_
rake aborted!
undefined method `directory?' for nil:NilClass

Tasks: TOP => assets:precompile
(See full trace by running task with --trace)

I’m looking forward to someone’s insight in this one, I’ve been racking my brain and Googling answers for hours.

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1 Answer

  1. Editorial Team

    This is what happens when the file system can’t find one of the assets it thinks its supposed to precompile. This happened to me when my VM could not find one of the files in my shared folder (Weird VMware issue where it appeared in the directory listing but the file did not actually exist)

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